Disk blade



FIG. 1 is a front, perspective view of a disk blade shown according to the present design;

FIG. 2 is a rear, perspective view thereof;

FIG. 3. is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a side elevational view thereof; and,

FIG. 6 is a cross-sectional view thereof taken along line 6-6 in FIG. 3.

The broken line representations in the figures show unclaimed environment or boundaries. The broken line representations thus form no part of the claimed design as filed. 

CLAIM The ornamental design for a disk blade, as shown and described. 